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	Provedor de dados ArchiMer (2) Autor Domenici, P (2) Castelli, A (1) Casu, M (1) Claireaux, Guy (1) Cossu, P (1) Fosch, Cf (1) Maltagliati, F (1) Mckenzie, David (1) Shingles, A (1) Mais... Palavra-chave Air Breathing Fish (1) Aquatic Surface Respiration (1) Brackish-water habitats (1) Cardiorespiratory Reflexes (1) Channel Catfish (1) Divergence de populations (1) Eaux saumâtres (1) Genetic variation (1) Morphologie (1) Morphology (1) Neotropical Fish (1) Oxygen (1) Population divergence (1) RAPDs (1) Relative fin size (1) Salmon Oncorhynchus Tshawytscha (1) Taille relative des nageoires (1) Tambaqui Colossoma Macropomum (1) Variation génétique (1) Mais... Tipo do documento Text (2) Ano 2005 (1) 2003 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Reflex cardioventilatory responses to hypoxia in the flathead gray mullet (Mugil cephalus) and their behavioral modulation by perceived threat of predation and water turbidity ArchiMer Shingles, A; Mckenzie, David; Claireaux, Guy; Domenici, P. In hypoxia, gray mullet surface to ventilate well-oxygenated water in contact with air, an adaptive response known as aquatic surface respiration (ASR). Reflex control of ASR and its behavioral modulation by perceived threat of aerial predation and turbid water were studied on mullet in a partly sheltered aquarium with free surface access. Injections of sodium cyanide (NaCN) into either the bloodstream ( internal) or ventilatory water stream ( external) revealed that ASR, hypoxic bradycardia, and branchial hyperventilation were stimulated by chemoreceptors sensitive to both systemic and water O-2 levels. Sight of a model avian predator elicited bradycardia and hypoventilation, a fear response that inhibited reflex hyperventilation following external NaCN.... Tipo: Text Palavras-chave: Oxygen; Channel Catfish; Neotropical Fish; Cardiorespiratory Reflexes; Air Breathing Fish; Tambaqui Colossoma Macropomum; Salmon Oncorhynchus Tshawytscha; Aquatic Surface Respiration. Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-637.pdf Small-scale morphological and genetic differentiation in the Mediterranean killifish Aphanius fasciatus (Cyprinodontidae) from a coastal brackish-water pond and an adjacent pool in northern Sardinia ArchiMer Maltagliati, F; Domenici, P; Fosch, Cf; Cossu, P; Casu, M; Castelli, A. Two samples of Aphanius fasciatus collected in the Pilo pond (northern Sardinia, Italy) and in an adjacent pool of small surface area were analysed morphologically (235 individuals) and genetically (a subsample of 58 individuals). The aims of the present study were (i) to test the hypothesis that different predation pressures may be associated with morphological and/or genetic differences between samples from each habitat and (ii) to assess the level of divergence between the two populations. Morphological analysis was based on the relative size of fins because it has been shown to be associated with predation pressure. The relative caudal fin area (caudal fin area/total body surface) was smaller in specimens from the pool, in both males and females,... Tipo: Text Palavras-chave: Morphologie; Taille relative des nageoires; Variation génétique; Divergence de populations; Eaux saumâtres; Morphology; Relative fin size; Genetic variation; RAPDs; Population divergence; Brackish-water habitats. Ano: 2003 URL: http://archimer.ifremer.fr/doc/00322/43291/43026.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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